CLAS Physics Database

Measurement E102M52

Experiment: E-89-039
Year: 2007

Measurement comment:

Electron beam energy is 4.056 GeV. Measurements are average of Phi* and 360-Phi*.
Spokespersons: S. Dytman, K. Giovanetti
Reaction: ep → η p
Polarization: none
Quantity: dσ/dΩ
Q2: 1.3 — 2.1 GeV2
W: 1.81 — 1.83 GeV
Publication:
H. Denizli, J. Mueller, S. Dytman, M.L. Leber, R.D. Levine, J. Miles, K.Y. Kim, and CLAS Collaboration Q2 dependence of the S11(1535) Photocoupling and Evidence for a P-wave resonance in η electroproduction //

Slice: cos(θ) = dimensionless

Measurement data
cos(θ) φ, [degree] dσ/dΩ, [μb/sr] uncertainty syst. uncert.
-0.8 15.0 0.016 0.016 0.002
-0.4 15.0 -0.006 0.02 0.003
0.0 15.0 0.031 0.021 0.002
0.4 15.0 0.111 0.035 0.005
0.8 15.0 0.074 0.027 0.006
-0.8 45.0 -0.001 0.012 0.0
-0.4 45.0 0.015 0.02 0.002
0.0 45.0 0.033 0.028 0.002
0.4 45.0 0.084 0.044 0.001
0.8 45.0 0.031 0.041 0.002
-0.8 75.0 0.018 0.021 0.001
-0.4 75.0 0.019 0.05 0.007
0.0 75.0 0.087 0.049 0.005
0.4 75.0 0.097 0.03 0.006
0.8 75.0 0.063 0.025 0.007
-0.8 105.0 -0.011 0.028 0.001
-0.4 105.0 0.04 0.032 0.003
0.0 105.0 0.049 0.019 0.002
0.4 105.0 0.13 0.028 0.008
0.8 105.0 0.076 0.032 0.003
-0.8 135.0 0.055 0.052 0.015
-0.4 135.0 0.06 0.056 0.008
0.0 135.0 0.087 0.045 0.009
0.4 135.0 0.039 0.039 0.005
0.8 135.0 0.124 0.046 0.009
-0.8 165.0 0.009 0.026 0.001